The action of an aeroplane in coming to earth other than at the will of the pilot

Forumite

One who frequently reads and/or posts messages in The Aerodrome Forum

Fug

A heavy, stale atmosphere, especially the musty air of an overcrowded or poorly ventilated room such as an RFC mess (in which, we are told, the windows were never opened, even in summer, because pilots treasured being warm).

Fug-boots

Vulgar British term for the leather, thigh-length boots that pilots sometimes wore.